Home / 72,177.03-107,709.10-63,430.78

Finding the Fourth Proportional to 72,177.03, 107,709.10 and 63,430.78

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Solution

The fourth proportional to 72,177.03, 107,709.10 and 63,430.78 is: 94,657.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,177.03 : 107,709.10 = 63,430.78 : x
  2. Step 2: Convert to fraction form
    72,177.03/107,709.10 = 63,430.78/x
  3. Step 3: Cross multiply
    72,177.03x = 107,709.10 × 63,430.78
  4. Step 4: Simplify right side
    72,177.03x = 6,832,072,226.10
  5. Step 5: Solve for x
    x = 6,832,072,226.10/72,177.03
  6. Step 6: Final answer
    x = 94,657.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.