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Finding the Fourth Proportional to 71,643.40, 107,465.10 and 62,895.40

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Solution

The fourth proportional to 71,643.40, 107,465.10 and 62,895.40 is: 94,343.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,643.40 : 107,465.10 = 62,895.40 : x
  2. Step 2: Convert to fraction form
    71,643.40/107,465.10 = 62,895.40/x
  3. Step 3: Cross multiply
    71,643.40x = 107,465.10 × 62,895.40
  4. Step 4: Simplify right side
    71,643.40x = 6,759,060,450.54
  5. Step 5: Solve for x
    x = 6,759,060,450.54/71,643.40
  6. Step 6: Final answer
    x = 94,343.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.