Home / 72,749,038.56-100,378,686.72-41,803,229.12

Finding the Fourth Proportional to 72,749,038.56, 100,378,686.72 and 41,803,229.12

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Solution

The fourth proportional to 72,749,038.56, 100,378,686.72 and 41,803,229.12 is: 57,679,844.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,749,038.56 : 100,378,686.72 = 41,803,229.12 : x
  2. Step 2: Convert to fraction form
    72,749,038.56/100,378,686.72 = 41,803,229.12/x
  3. Step 3: Cross multiply
    72,749,038.56x = 100,378,686.72 × 41,803,229.12
  4. Step 4: Simplify right side
    72,749,038.56x = 4,196,153,239,720,861
  5. Step 5: Solve for x
    x = 4,196,153,239,720,861/72,749,038.56
  6. Step 6: Final answer
    x = 57,679,844.61

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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.