Home / 90,288,043.20-135,432,064.80-56,191,838.40

Finding the Fourth Proportional to 90,288,043.20, 135,432,064.80 and 56,191,838.40

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Solution

The fourth proportional to 90,288,043.20, 135,432,064.80 and 56,191,838.40 is: 84,287,757.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,288,043.20 : 135,432,064.80 = 56,191,838.40 : x
  2. Step 2: Convert to fraction form
    90,288,043.20/135,432,064.80 = 56,191,838.40/x
  3. Step 3: Cross multiply
    90,288,043.20x = 135,432,064.80 × 56,191,838.40
  4. Step 4: Simplify right side
    90,288,043.20x = 7,610,176,699,419,929
  5. Step 5: Solve for x
    x = 7,610,176,699,419,929/90,288,043.20
  6. Step 6: Final answer
    x = 84,287,757.60

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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.