Home / 56,045.76-77,346.72-30,897.60

Finding the Fourth Proportional to 56,045.76, 77,346.72 and 30,897.60

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Solution

The fourth proportional to 56,045.76, 77,346.72 and 30,897.60 is: 42,640.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,045.76 : 77,346.72 = 30,897.60 : x
  2. Step 2: Convert to fraction form
    56,045.76/77,346.72 = 30,897.60/x
  3. Step 3: Cross multiply
    56,045.76x = 77,346.72 × 30,897.60
  4. Step 4: Simplify right side
    56,045.76x = 2,389,828,015.87
  5. Step 5: Solve for x
    x = 2,389,828,015.87/56,045.76
  6. Step 6: Final answer
    x = 42,640.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.