Home / 78,732,340.80-118,098,511.20-40,468,588.80

Finding the Fourth Proportional to 78,732,340.80, 118,098,511.20 and 40,468,588.80

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Solution

The fourth proportional to 78,732,340.80, 118,098,511.20 and 40,468,588.80 is: 60,702,883.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,340.80 : 118,098,511.20 = 40,468,588.80 : x
  2. Step 2: Convert to fraction form
    78,732,340.80/118,098,511.20 = 40,468,588.80/x
  3. Step 3: Cross multiply
    78,732,340.80x = 118,098,511.20 × 40,468,588.80
  4. Step 4: Simplify right side
    78,732,340.80x = 4,779,280,087,644,994
  5. Step 5: Solve for x
    x = 4,779,280,087,644,994/78,732,340.80
  6. Step 6: Final answer
    x = 60,702,883.20

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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.