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Finding the Fourth Proportional to 61,991, 93,323.87 and 56,479.76

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Solution

The fourth proportional to 61,991, 93,323.87 and 56,479.76 is: 85,027.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,991 : 93,323.87 = 56,479.76 : x
  2. Step 2: Convert to fraction form
    61,991/93,323.87 = 56,479.76/x
  3. Step 3: Cross multiply
    61,991x = 93,323.87 × 56,479.76
  4. Step 4: Simplify right side
    61,991x = 5,270,909,779.87
  5. Step 5: Solve for x
    x = 5,270,909,779.87/61,991
  6. Step 6: Final answer
    x = 85,027.02

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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.