Home / 86,070.50-118,502.70-72,608.30

Finding the Fourth Proportional to 86,070.50, 118,502.70 and 72,608.30

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Solution

The fourth proportional to 86,070.50, 118,502.70 and 72,608.30 is: 99,967.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,070.50 : 118,502.70 = 72,608.30 : x
  2. Step 2: Convert to fraction form
    86,070.50/118,502.70 = 72,608.30/x
  3. Step 3: Cross multiply
    86,070.50x = 118,502.70 × 72,608.30
  4. Step 4: Simplify right side
    86,070.50x = 8,604,279,592.41
  5. Step 5: Solve for x
    x = 8,604,279,592.41/86,070.50
  6. Step 6: Final answer
    x = 99,967.81

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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.