Home / 78,918,280.29-117,545,249.39-75,377,389.46

Finding the Fourth Proportional to 78,918,280.29, 117,545,249.39 and 75,377,389.46

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Solution

The fourth proportional to 78,918,280.29, 117,545,249.39 and 75,377,389.46 is: 112,271,250.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,918,280.29 : 117,545,249.39 = 75,377,389.46 : x
  2. Step 2: Convert to fraction form
    78,918,280.29/117,545,249.39 = 75,377,389.46/x
  3. Step 3: Cross multiply
    78,918,280.29x = 117,545,249.39 × 75,377,389.46
  4. Step 4: Simplify right side
    78,918,280.29x = 8,860,254,041,478,244
  5. Step 5: Solve for x
    x = 8,860,254,041,478,244/78,918,280.29
  6. Step 6: Final answer
    x = 112,271,250.83

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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.