Home / 78,287,864.93-117,430,261.78-31,600,108.77

Finding the Fourth Proportional to 78,287,864.93, 117,430,261.78 and 31,600,108.77

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Solution

The fourth proportional to 78,287,864.93, 117,430,261.78 and 31,600,108.77 is: 47,399,543.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,287,864.93 : 117,430,261.78 = 31,600,108.77 : x
  2. Step 2: Convert to fraction form
    78,287,864.93/117,430,261.78 = 31,600,108.77/x
  3. Step 3: Cross multiply
    78,287,864.93x = 117,430,261.78 × 31,600,108.77
  4. Step 4: Simplify right side
    78,287,864.93x = 3,710,809,045,712,617.50
  5. Step 5: Solve for x
    x = 3,710,809,045,712,617.50/78,287,864.93
  6. Step 6: Final answer
    x = 47,399,543.33

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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.