Home / 78,314.47-108,071.22-42,503.76

Finding the Fourth Proportional to 78,314.47, 108,071.22 and 42,503.76

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Solution

The fourth proportional to 78,314.47, 108,071.22 and 42,503.76 is: 58,653.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,314.47 : 108,071.22 = 42,503.76 : x
  2. Step 2: Convert to fraction form
    78,314.47/108,071.22 = 42,503.76/x
  3. Step 3: Cross multiply
    78,314.47x = 108,071.22 × 42,503.76
  4. Step 4: Simplify right side
    78,314.47x = 4,593,432,985.27
  5. Step 5: Solve for x
    x = 4,593,432,985.27/78,314.47
  6. Step 6: Final answer
    x = 58,653.70

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1.5x scale

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.