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Finding the Fourth Proportional to 92,887.71, 128,238.18 and 61,148.88

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Solution

The fourth proportional to 92,887.71, 128,238.18 and 61,148.88 is: 84,420.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,887.71 : 128,238.18 = 61,148.88 : x
  2. Step 2: Convert to fraction form
    92,887.71/128,238.18 = 61,148.88/x
  3. Step 3: Cross multiply
    92,887.71x = 128,238.18 × 61,148.88
  4. Step 4: Simplify right side
    92,887.71x = 7,841,621,080.24
  5. Step 5: Solve for x
    x = 7,841,621,080.24/92,887.71
  6. Step 6: Final answer
    x = 84,420.44

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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.