Home / 77,972,678.73-107,598,033.74-42,683,657.13

Finding the Fourth Proportional to 77,972,678.73, 107,598,033.74 and 42,683,657.13

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Solution

The fourth proportional to 77,972,678.73, 107,598,033.74 and 42,683,657.13 is: 58,901,113.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,972,678.73 : 107,598,033.74 = 42,683,657.13 : x
  2. Step 2: Convert to fraction form
    77,972,678.73/107,598,033.74 = 42,683,657.13/x
  3. Step 3: Cross multiply
    77,972,678.73x = 107,598,033.74 × 42,683,657.13
  4. Step 4: Simplify right side
    77,972,678.73x = 4,592,677,580,020,332
  5. Step 5: Solve for x
    x = 4,592,677,580,020,332/77,972,678.73
  6. Step 6: Final answer
    x = 58,901,113.25

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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.