Home / 72,772,631.72-100,414,384.14-42,999,131.87

Finding the Fourth Proportional to 72,772,631.72, 100,414,384.14 and 42,999,131.87

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Solution

The fourth proportional to 72,772,631.72, 100,414,384.14 and 42,999,131.87 is: 59,331,801.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,772,631.72 : 100,414,384.14 = 42,999,131.87 : x
  2. Step 2: Convert to fraction form
    72,772,631.72/100,414,384.14 = 42,999,131.87/x
  3. Step 3: Cross multiply
    72,772,631.72x = 100,414,384.14 × 42,999,131.87
  4. Step 4: Simplify right side
    72,772,631.72x = 4,317,731,345,280,696.50
  5. Step 5: Solve for x
    x = 4,317,731,345,280,696.50/72,772,631.72
  6. Step 6: Final answer
    x = 59,331,801.57

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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.