Home / 77,818,840.56-107,390,422.17-42,536,693.07

Finding the Fourth Proportional to 77,818,840.56, 107,390,422.17 and 42,536,693.07

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Solution

The fourth proportional to 77,818,840.56, 107,390,422.17 and 42,536,693.07 is: 58,700,867.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,818,840.56 : 107,390,422.17 = 42,536,693.07 : x
  2. Step 2: Convert to fraction form
    77,818,840.56/107,390,422.17 = 42,536,693.07/x
  3. Step 3: Cross multiply
    77,818,840.56x = 107,390,422.17 × 42,536,693.07
  4. Step 4: Simplify right side
    77,818,840.56x = 4,568,033,426,503,013
  5. Step 5: Solve for x
    x = 4,568,033,426,503,013/77,818,840.56
  6. Step 6: Final answer
    x = 58,700,867.21

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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.