Home / 78,312.20-108,069.93-42,502.23

Finding the Fourth Proportional to 78,312.20, 108,069.93 and 42,502.23

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Solution

The fourth proportional to 78,312.20, 108,069.93 and 42,502.23 is: 58,652.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,312.20 : 108,069.93 = 42,502.23 : x
  2. Step 2: Convert to fraction form
    78,312.20/108,069.93 = 42,502.23/x
  3. Step 3: Cross multiply
    78,312.20x = 108,069.93 × 42,502.23
  4. Step 4: Simplify right side
    78,312.20x = 4,593,213,020.94
  5. Step 5: Solve for x
    x = 4,593,213,020.94/78,312.20
  6. Step 6: Final answer
    x = 58,652.59

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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.