Home / 78,624,151.80-117,936,227.70-64,753,541.70

Finding the Fourth Proportional to 78,624,151.80, 117,936,227.70 and 64,753,541.70

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Solution

The fourth proportional to 78,624,151.80, 117,936,227.70 and 64,753,541.70 is: 97,130,312.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,624,151.80 : 117,936,227.70 = 64,753,541.70 : x
  2. Step 2: Convert to fraction form
    78,624,151.80/117,936,227.70 = 64,753,541.70/x
  3. Step 3: Cross multiply
    78,624,151.80x = 117,936,227.70 × 64,753,541.70
  4. Step 4: Simplify right side
    78,624,151.80x = 7,636,788,438,312,646
  5. Step 5: Solve for x
    x = 7,636,788,438,312,646/78,624,151.80
  6. Step 6: Final answer
    x = 97,130,312.55

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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.