Home / 66,430.14-91,621.74-42,559.02

Finding the Fourth Proportional to 66,430.14, 91,621.74 and 42,559.02

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Solution

The fourth proportional to 66,430.14, 91,621.74 and 42,559.02 is: 58,698.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,430.14 : 91,621.74 = 42,559.02 : x
  2. Step 2: Convert to fraction form
    66,430.14/91,621.74 = 42,559.02/x
  3. Step 3: Cross multiply
    66,430.14x = 91,621.74 × 42,559.02
  4. Step 4: Simplify right side
    66,430.14x = 3,899,331,465.09
  5. Step 5: Solve for x
    x = 3,899,331,465.09/66,430.14
  6. Step 6: Final answer
    x = 58,698.23

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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.