Home / 72,539.55-100,102.84-40,705.13

Finding the Fourth Proportional to 72,539.55, 100,102.84 and 40,705.13

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Solution

The fourth proportional to 72,539.55, 100,102.84 and 40,705.13 is: 56,172.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,539.55 : 100,102.84 = 40,705.13 : x
  2. Step 2: Convert to fraction form
    72,539.55/100,102.84 = 40,705.13/x
  3. Step 3: Cross multiply
    72,539.55x = 100,102.84 × 40,705.13
  4. Step 4: Simplify right side
    72,539.55x = 4,074,699,264.06
  5. Step 5: Solve for x
    x = 4,074,699,264.06/72,539.55
  6. Step 6: Final answer
    x = 56,172.11

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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.