Home / 78,918,707.28-117,545,885.16-75,377,816.04

Finding the Fourth Proportional to 78,918,707.28, 117,545,885.16 and 75,377,816.04

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Solution

The fourth proportional to 78,918,707.28, 117,545,885.16 and 75,377,816.04 is: 112,271,886.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,918,707.28 : 117,545,885.16 = 75,377,816.04 : x
  2. Step 2: Convert to fraction form
    78,918,707.28/117,545,885.16 = 75,377,816.04/x
  3. Step 3: Cross multiply
    78,918,707.28x = 117,545,885.16 × 75,377,816.04
  4. Step 4: Simplify right side
    78,918,707.28x = 8,860,352,107,849,446
  5. Step 5: Solve for x
    x = 8,860,352,107,849,446/78,918,707.28
  6. Step 6: Final answer
    x = 112,271,886.01

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.