Home / 85,433,138.30-128,118,214.65-42,288,002.30

Finding the Fourth Proportional to 85,433,138.30, 128,118,214.65 and 42,288,002.30

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Solution

The fourth proportional to 85,433,138.30, 128,118,214.65 and 42,288,002.30 is: 63,416,415.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,433,138.30 : 128,118,214.65 = 42,288,002.30 : x
  2. Step 2: Convert to fraction form
    85,433,138.30/128,118,214.65 = 42,288,002.30/x
  3. Step 3: Cross multiply
    85,433,138.30x = 128,118,214.65 × 42,288,002.30
  4. Step 4: Simplify right side
    85,433,138.30x = 5,417,863,355,791,094
  5. Step 5: Solve for x
    x = 5,417,863,355,791,094/85,433,138.30
  6. Step 6: Final answer
    x = 63,416,415.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.