Home / 77,300,356.40-115,950,534.60-42,862,979.60

Finding the Fourth Proportional to 77,300,356.40, 115,950,534.60 and 42,862,979.60

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Solution

The fourth proportional to 77,300,356.40, 115,950,534.60 and 42,862,979.60 is: 64,294,469.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,300,356.40 : 115,950,534.60 = 42,862,979.60 : x
  2. Step 2: Convert to fraction form
    77,300,356.40/115,950,534.60 = 42,862,979.60/x
  3. Step 3: Cross multiply
    77,300,356.40x = 115,950,534.60 × 42,862,979.60
  4. Step 4: Simplify right side
    77,300,356.40x = 4,969,985,399,168,894
  5. Step 5: Solve for x
    x = 4,969,985,399,168,894/77,300,356.40
  6. Step 6: Final answer
    x = 64,294,469.40

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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.