Home / 81,768,900.24-122,707,894.95-42,413,425.20

Finding the Fourth Proportional to 81,768,900.24, 122,707,894.95 and 42,413,425.20

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Solution

The fourth proportional to 81,768,900.24, 122,707,894.95 and 42,413,425.20 is: 63,648,430.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,768,900.24 : 122,707,894.95 = 42,413,425.20 : x
  2. Step 2: Convert to fraction form
    81,768,900.24/122,707,894.95 = 42,413,425.20/x
  3. Step 3: Cross multiply
    81,768,900.24x = 122,707,894.95 × 42,413,425.20
  4. Step 4: Simplify right side
    81,768,900.24x = 5,204,462,123,911,283
  5. Step 5: Solve for x
    x = 5,204,462,123,911,283/81,768,900.24
  6. Step 6: Final answer
    x = 63,648,430.01

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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.