Home / 66,430.13-91,673.57-42,556.80

Finding the Fourth Proportional to 66,430.13, 91,673.57 and 42,556.80

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Solution

The fourth proportional to 66,430.13, 91,673.57 and 42,556.80 is: 58,728.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,430.13 : 91,673.57 = 42,556.80 : x
  2. Step 2: Convert to fraction form
    66,430.13/91,673.57 = 42,556.80/x
  3. Step 3: Cross multiply
    66,430.13x = 91,673.57 × 42,556.80
  4. Step 4: Simplify right side
    66,430.13x = 3,901,333,782.74
  5. Step 5: Solve for x
    x = 3,901,333,782.74/66,430.13
  6. Step 6: Final answer
    x = 58,728.38

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1.5x scale

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.