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Finding the Fourth Proportional to 78,332.66, 117,462.53 and 28,410.74

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Solution

The fourth proportional to 78,332.66, 117,462.53 and 28,410.74 is: 42,602.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,332.66 : 117,462.53 = 28,410.74 : x
  2. Step 2: Convert to fraction form
    78,332.66/117,462.53 = 28,410.74/x
  3. Step 3: Cross multiply
    78,332.66x = 117,462.53 × 28,410.74
  4. Step 4: Simplify right side
    78,332.66x = 3,337,196,670.21
  5. Step 5: Solve for x
    x = 3,337,196,670.21/78,332.66
  6. Step 6: Final answer
    x = 42,602.88

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1.5x scale

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.