Home / 78,609,975.21-108,480,312.72-42,846,724.17

Finding the Fourth Proportional to 78,609,975.21, 108,480,312.72 and 42,846,724.17

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Solution

The fourth proportional to 78,609,975.21, 108,480,312.72 and 42,846,724.17 is: 59,127,687.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,609,975.21 : 108,480,312.72 = 42,846,724.17 : x
  2. Step 2: Convert to fraction form
    78,609,975.21/108,480,312.72 = 42,846,724.17/x
  3. Step 3: Cross multiply
    78,609,975.21x = 108,480,312.72 × 42,846,724.17
  4. Step 4: Simplify right side
    78,609,975.21x = 4,648,026,036,989,183
  5. Step 5: Solve for x
    x = 4,648,026,036,989,183/78,609,975.21
  6. Step 6: Final answer
    x = 59,127,687.35

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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.