Home / 72,416.16-99,921.60-40,586.40

Finding the Fourth Proportional to 72,416.16, 99,921.60 and 40,586.40

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Solution

The fourth proportional to 72,416.16, 99,921.60 and 40,586.40 is: 56,002.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,416.16 : 99,921.60 = 40,586.40 : x
  2. Step 2: Convert to fraction form
    72,416.16/99,921.60 = 40,586.40/x
  3. Step 3: Cross multiply
    72,416.16x = 99,921.60 × 40,586.40
  4. Step 4: Simplify right side
    72,416.16x = 4,055,458,026.24
  5. Step 5: Solve for x
    x = 4,055,458,026.24/72,416.16
  6. Step 6: Final answer
    x = 56,002.11

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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.