Home / 78,345,988.50-108,108,878.88-45,301,236.87

Finding the Fourth Proportional to 78,345,988.50, 108,108,878.88 and 45,301,236.87

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Solution

The fourth proportional to 78,345,988.50, 108,108,878.88 and 45,301,236.87 is: 62,510,742.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,345,988.50 : 108,108,878.88 = 45,301,236.87 : x
  2. Step 2: Convert to fraction form
    78,345,988.50/108,108,878.88 = 45,301,236.87/x
  3. Step 3: Cross multiply
    78,345,988.50x = 108,108,878.88 × 45,301,236.87
  4. Step 4: Simplify right side
    78,345,988.50x = 4,897,465,929,893,020
  5. Step 5: Solve for x
    x = 4,897,465,929,893,020/78,345,988.50
  6. Step 6: Final answer
    x = 62,510,742.72

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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.