Home / 55,430.51-83,145.71-17,990.57

Finding the Fourth Proportional to 55,430.51, 83,145.71 and 17,990.57

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Solution

The fourth proportional to 55,430.51, 83,145.71 and 17,990.57 is: 26,985.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,430.51 : 83,145.71 = 17,990.57 : x
  2. Step 2: Convert to fraction form
    55,430.51/83,145.71 = 17,990.57/x
  3. Step 3: Cross multiply
    55,430.51x = 83,145.71 × 17,990.57
  4. Step 4: Simplify right side
    55,430.51x = 1,495,838,968.80
  5. Step 5: Solve for x
    x = 1,495,838,968.80/55,430.51
  6. Step 6: Final answer
    x = 26,985.84

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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.