Home / 72,132.92-99,543.93-40,303.16

Finding the Fourth Proportional to 72,132.92, 99,543.93 and 40,303.16

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Solution

The fourth proportional to 72,132.92, 99,543.93 and 40,303.16 is: 55,618.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,132.92 : 99,543.93 = 40,303.16 : x
  2. Step 2: Convert to fraction form
    72,132.92/99,543.93 = 40,303.16/x
  3. Step 3: Cross multiply
    72,132.92x = 99,543.93 × 40,303.16
  4. Step 4: Simplify right side
    72,132.92x = 4,011,934,937.82
  5. Step 5: Solve for x
    x = 4,011,934,937.82/72,132.92
  6. Step 6: Final answer
    x = 55,618.64

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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.