Home / 53,139.36-72,801.26-51,146.40

Finding the Fourth Proportional to 53,139.36, 72,801.26 and 51,146.40

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Solution

The fourth proportional to 53,139.36, 72,801.26 and 51,146.40 is: 70,070.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,139.36 : 72,801.26 = 51,146.40 : x
  2. Step 2: Convert to fraction form
    53,139.36/72,801.26 = 51,146.40/x
  3. Step 3: Cross multiply
    53,139.36x = 72,801.26 × 51,146.40
  4. Step 4: Simplify right side
    53,139.36x = 3,723,522,364.46
  5. Step 5: Solve for x
    x = 3,723,522,364.46/53,139.36
  6. Step 6: Final answer
    x = 70,070.89

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.