Home / 66,423,621.40-99,635,432.10-40,781,483.80

Finding the Fourth Proportional to 66,423,621.40, 99,635,432.10 and 40,781,483.80

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Solution

The fourth proportional to 66,423,621.40, 99,635,432.10 and 40,781,483.80 is: 61,172,225.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,423,621.40 : 99,635,432.10 = 40,781,483.80 : x
  2. Step 2: Convert to fraction form
    66,423,621.40/99,635,432.10 = 40,781,483.80/x
  3. Step 3: Cross multiply
    66,423,621.40x = 99,635,432.10 × 40,781,483.80
  4. Step 4: Simplify right side
    66,423,621.40x = 4,063,280,760,092,149.50
  5. Step 5: Solve for x
    x = 4,063,280,760,092,149.50/66,423,621.40
  6. Step 6: Final answer
    x = 61,172,225.70

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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.