Home / 77,977,929.78-107,609,569.13-42,697,966.23

Finding the Fourth Proportional to 77,977,929.78, 107,609,569.13 and 42,697,966.23

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Solution

The fourth proportional to 77,977,929.78, 107,609,569.13 and 42,697,966.23 is: 58,923,207.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,977,929.78 : 107,609,569.13 = 42,697,966.23 : x
  2. Step 2: Convert to fraction form
    77,977,929.78/107,609,569.13 = 42,697,966.23/x
  3. Step 3: Cross multiply
    77,977,929.78x = 107,609,569.13 × 42,697,966.23
  4. Step 4: Simplify right side
    77,977,929.78x = 4,594,709,748,844,335
  5. Step 5: Solve for x
    x = 4,594,709,748,844,335/77,977,929.78
  6. Step 6: Final answer
    x = 58,923,207.65

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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.