Home / 78,240,918.42-107,967,049.20-43,430,867.10

Finding the Fourth Proportional to 78,240,918.42, 107,967,049.20 and 43,430,867.10

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Solution

The fourth proportional to 78,240,918.42, 107,967,049.20 and 43,430,867.10 is: 59,931,588.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,240,918.42 : 107,967,049.20 = 43,430,867.10 : x
  2. Step 2: Convert to fraction form
    78,240,918.42/107,967,049.20 = 43,430,867.10/x
  3. Step 3: Cross multiply
    78,240,918.42x = 107,967,049.20 × 43,430,867.10
  4. Step 4: Simplify right side
    78,240,918.42x = 4,689,102,564,984,362
  5. Step 5: Solve for x
    x = 4,689,102,564,984,362/78,240,918.42
  6. Step 6: Final answer
    x = 59,931,588.99

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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.