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Finding the Fourth Proportional to 90,378.84, 124,733.88 and 52,655.52

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Solution

The fourth proportional to 90,378.84, 124,733.88 and 52,655.52 is: 72,671.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,378.84 : 124,733.88 = 52,655.52 : x
  2. Step 2: Convert to fraction form
    90,378.84/124,733.88 = 52,655.52/x
  3. Step 3: Cross multiply
    90,378.84x = 124,733.88 × 52,655.52
  4. Step 4: Simplify right side
    90,378.84x = 6,567,927,313.02
  5. Step 5: Solve for x
    x = 6,567,927,313.02/90,378.84
  6. Step 6: Final answer
    x = 72,671.07

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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.