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Finding the Fourth Proportional to 90,526, 124,925.88 and 50,782

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Solution

The fourth proportional to 90,526, 124,925.88 and 50,782 is: 70,079.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,526 : 124,925.88 = 50,782 : x
  2. Step 2: Convert to fraction form
    90,526/124,925.88 = 50,782/x
  3. Step 3: Cross multiply
    90,526x = 124,925.88 × 50,782
  4. Step 4: Simplify right side
    90,526x = 6,343,986,038.16
  5. Step 5: Solve for x
    x = 6,343,986,038.16/90,526
  6. Step 6: Final answer
    x = 70,079.16

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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.