Home / 78,880,675.92-118,859,431.94-64,818,747.06

Finding the Fourth Proportional to 78,880,675.92, 118,859,431.94 and 64,818,747.06

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Solution

The fourth proportional to 78,880,675.92, 118,859,431.94 and 64,818,747.06 is: 97,670,555.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,880,675.92 : 118,859,431.94 = 64,818,747.06 : x
  2. Step 2: Convert to fraction form
    78,880,675.92/118,859,431.94 = 64,818,747.06/x
  3. Step 3: Cross multiply
    78,880,675.92x = 118,859,431.94 × 64,818,747.06
  4. Step 4: Simplify right side
    78,880,675.92x = 7,704,319,454,614,145
  5. Step 5: Solve for x
    x = 7,704,319,454,614,145/78,880,675.92
  6. Step 6: Final answer
    x = 97,670,555.74

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.