Home / 78,417,031.80-117,625,547.70-74,889,838.20

Finding the Fourth Proportional to 78,417,031.80, 117,625,547.70 and 74,889,838.20

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Solution

The fourth proportional to 78,417,031.80, 117,625,547.70 and 74,889,838.20 is: 112,334,757.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,417,031.80 : 117,625,547.70 = 74,889,838.20 : x
  2. Step 2: Convert to fraction form
    78,417,031.80/117,625,547.70 = 74,889,838.20/x
  3. Step 3: Cross multiply
    78,417,031.80x = 117,625,547.70 × 74,889,838.20
  4. Step 4: Simplify right side
    78,417,031.80x = 8,808,958,235,439,383
  5. Step 5: Solve for x
    x = 8,808,958,235,439,383/78,417,031.80
  6. Step 6: Final answer
    x = 112,334,757.30

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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.