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Finding the Fourth Proportional to 92,889.71, 128,240.93 and 61,150.87

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Solution

The fourth proportional to 92,889.71, 128,240.93 and 61,150.87 is: 84,423.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,889.71 : 128,240.93 = 61,150.87 : x
  2. Step 2: Convert to fraction form
    92,889.71/128,240.93 = 61,150.87/x
  3. Step 3: Cross multiply
    92,889.71x = 128,240.93 × 61,150.87
  4. Step 4: Simplify right side
    92,889.71x = 7,842,043,492.15
  5. Step 5: Solve for x
    x = 7,842,043,492.15/92,889.71
  6. Step 6: Final answer
    x = 84,423.17

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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.