Home / 90,320.32-135,526.74-42,988.96

Finding the Fourth Proportional to 90,320.32, 135,526.74 and 42,988.96

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Solution

The fourth proportional to 90,320.32, 135,526.74 and 42,988.96 is: 64,505.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,320.32 : 135,526.74 = 42,988.96 : x
  2. Step 2: Convert to fraction form
    90,320.32/135,526.74 = 42,988.96/x
  3. Step 3: Cross multiply
    90,320.32x = 135,526.74 × 42,988.96
  4. Step 4: Simplify right side
    90,320.32x = 5,826,153,604.79
  5. Step 5: Solve for x
    x = 5,826,153,604.79/90,320.32
  6. Step 6: Final answer
    x = 64,505.46

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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.