Home / 77,013,721.60-115,520,582.40-74,774,233.60

Finding the Fourth Proportional to 77,013,721.60, 115,520,582.40 and 74,774,233.60

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Solution

The fourth proportional to 77,013,721.60, 115,520,582.40 and 74,774,233.60 is: 112,161,350.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,013,721.60 : 115,520,582.40 = 74,774,233.60 : x
  2. Step 2: Convert to fraction form
    77,013,721.60/115,520,582.40 = 74,774,233.60/x
  3. Step 3: Cross multiply
    77,013,721.60x = 115,520,582.40 × 74,774,233.60
  4. Step 4: Simplify right side
    77,013,721.60x = 8,637,963,013,985,648
  5. Step 5: Solve for x
    x = 8,637,963,013,985,648/77,013,721.60
  6. Step 6: Final answer
    x = 112,161,350.40

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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.