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Finding the Fourth Proportional to 90,090.84, 124,340.82 and 52,387

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Solution

The fourth proportional to 90,090.84, 124,340.82 and 52,387 is: 72,303.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,090.84 : 124,340.82 = 52,387 : x
  2. Step 2: Convert to fraction form
    90,090.84/124,340.82 = 52,387/x
  3. Step 3: Cross multiply
    90,090.84x = 124,340.82 × 52,387
  4. Step 4: Simplify right side
    90,090.84x = 6,513,842,537.34
  5. Step 5: Solve for x
    x = 6,513,842,537.34/90,090.84
  6. Step 6: Final answer
    x = 72,303.05

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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.