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Finding the Fourth Proportional to 92,988.88, 128,325.20 and 54,750.13

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Solution

The fourth proportional to 92,988.88, 128,325.20 and 54,750.13 is: 75,555.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,988.88 : 128,325.20 = 54,750.13 : x
  2. Step 2: Convert to fraction form
    92,988.88/128,325.20 = 54,750.13/x
  3. Step 3: Cross multiply
    92,988.88x = 128,325.20 × 54,750.13
  4. Step 4: Simplify right side
    92,988.88x = 7,025,820,787.71
  5. Step 5: Solve for x
    x = 7,025,820,787.71/92,988.88
  6. Step 6: Final answer
    x = 75,555.50

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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.