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Finding the Fourth Proportional to 55,999.80, 83,913.30 and 48,569.40

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Solution

The fourth proportional to 55,999.80, 83,913.30 and 48,569.40 is: 72,779.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,999.80 : 83,913.30 = 48,569.40 : x
  2. Step 2: Convert to fraction form
    55,999.80/83,913.30 = 48,569.40/x
  3. Step 3: Cross multiply
    55,999.80x = 83,913.30 × 48,569.40
  4. Step 4: Simplify right side
    55,999.80x = 4,075,618,633.02
  5. Step 5: Solve for x
    x = 4,075,618,633.02/55,999.80
  6. Step 6: Final answer
    x = 72,779.16

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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.