Home / 55,840.16-76,979.76-39,918.80

Finding the Fourth Proportional to 55,840.16, 76,979.76 and 39,918.80

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Solution

The fourth proportional to 55,840.16, 76,979.76 and 39,918.80 is: 55,031.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,840.16 : 76,979.76 = 39,918.80 : x
  2. Step 2: Convert to fraction form
    55,840.16/76,979.76 = 39,918.80/x
  3. Step 3: Cross multiply
    55,840.16x = 76,979.76 × 39,918.80
  4. Step 4: Simplify right side
    55,840.16x = 3,072,939,643.49
  5. Step 5: Solve for x
    x = 3,072,939,643.49/55,840.16
  6. Step 6: Final answer
    x = 55,031.00

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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.