Home / 78,848.40-118,307.70-41,399.40

Finding the Fourth Proportional to 78,848.40, 118,307.70 and 41,399.40

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Solution

The fourth proportional to 78,848.40, 118,307.70 and 41,399.40 is: 62,117.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,848.40 : 118,307.70 = 41,399.40 : x
  2. Step 2: Convert to fraction form
    78,848.40/118,307.70 = 41,399.40/x
  3. Step 3: Cross multiply
    78,848.40x = 118,307.70 × 41,399.40
  4. Step 4: Simplify right side
    78,848.40x = 4,897,867,795.38
  5. Step 5: Solve for x
    x = 4,897,867,795.38/78,848.40
  6. Step 6: Final answer
    x = 62,117.53

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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.