Home / 72,109,812.48-108,091,935.36-45,202,364.16

Finding the Fourth Proportional to 72,109,812.48, 108,091,935.36 and 45,202,364.16

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Solution

The fourth proportional to 72,109,812.48, 108,091,935.36 and 45,202,364.16 is: 67,757,921.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,109,812.48 : 108,091,935.36 = 45,202,364.16 : x
  2. Step 2: Convert to fraction form
    72,109,812.48/108,091,935.36 = 45,202,364.16/x
  3. Step 3: Cross multiply
    72,109,812.48x = 108,091,935.36 × 45,202,364.16
  4. Step 4: Simplify right side
    72,109,812.48x = 4,886,011,024,901,900
  5. Step 5: Solve for x
    x = 4,886,011,024,901,900/72,109,812.48
  6. Step 6: Final answer
    x = 67,757,921.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.