Home / 55,505.21-76,578.80-31,303.17

Finding the Fourth Proportional to 55,505.21, 76,578.80 and 31,303.17

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Solution

The fourth proportional to 55,505.21, 76,578.80 and 31,303.17 is: 43,188.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,505.21 : 76,578.80 = 31,303.17 : x
  2. Step 2: Convert to fraction form
    55,505.21/76,578.80 = 31,303.17/x
  3. Step 3: Cross multiply
    55,505.21x = 76,578.80 × 31,303.17
  4. Step 4: Simplify right side
    55,505.21x = 2,397,159,038.28
  5. Step 5: Solve for x
    x = 2,397,159,038.28/55,505.21
  6. Step 6: Final answer
    x = 43,188.00

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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.