Home / 72,869,487.12-100,557,143.82-39,829,457.52

Finding the Fourth Proportional to 72,869,487.12, 100,557,143.82 and 39,829,457.52

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Solution

The fourth proportional to 72,869,487.12, 100,557,143.82 and 39,829,457.52 is: 54,963,149.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,869,487.12 : 100,557,143.82 = 39,829,457.52 : x
  2. Step 2: Convert to fraction form
    72,869,487.12/100,557,143.82 = 39,829,457.52/x
  3. Step 3: Cross multiply
    72,869,487.12x = 100,557,143.82 × 39,829,457.52
  4. Step 4: Simplify right side
    72,869,487.12x = 4,005,136,488,111,220.50
  5. Step 5: Solve for x
    x = 4,005,136,488,111,220.50/72,869,487.12
  6. Step 6: Final answer
    x = 54,963,149.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.