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Finding the Fourth Proportional to 81,750.90, 112,809.27 and 45,938.10

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Solution

The fourth proportional to 81,750.90, 112,809.27 and 45,938.10 is: 63,390.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,750.90 : 112,809.27 = 45,938.10 : x
  2. Step 2: Convert to fraction form
    81,750.90/112,809.27 = 45,938.10/x
  3. Step 3: Cross multiply
    81,750.90x = 112,809.27 × 45,938.10
  4. Step 4: Simplify right side
    81,750.90x = 5,182,243,526.19
  5. Step 5: Solve for x
    x = 5,182,243,526.19/81,750.90
  6. Step 6: Final answer
    x = 63,390.66

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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.