Home / 98,848.78-136,421.10-56,413.69

Finding the Fourth Proportional to 98,848.78, 136,421.10 and 56,413.69

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Solution

The fourth proportional to 98,848.78, 136,421.10 and 56,413.69 is: 77,856.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,848.78 : 136,421.10 = 56,413.69 : x
  2. Step 2: Convert to fraction form
    98,848.78/136,421.10 = 56,413.69/x
  3. Step 3: Cross multiply
    98,848.78x = 136,421.10 × 56,413.69
  4. Step 4: Simplify right side
    98,848.78x = 7,696,017,644.86
  5. Step 5: Solve for x
    x = 7,696,017,644.86/98,848.78
  6. Step 6: Final answer
    x = 77,856.48

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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.