Home / 47,128.51-65,030.09-28,001.21

Finding the Fourth Proportional to 47,128.51, 65,030.09 and 28,001.21

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Solution

The fourth proportional to 47,128.51, 65,030.09 and 28,001.21 is: 38,637.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,128.51 : 65,030.09 = 28,001.21 : x
  2. Step 2: Convert to fraction form
    47,128.51/65,030.09 = 28,001.21/x
  3. Step 3: Cross multiply
    47,128.51x = 65,030.09 × 28,001.21
  4. Step 4: Simplify right side
    47,128.51x = 1,820,921,206.41
  5. Step 5: Solve for x
    x = 1,820,921,206.41/47,128.51
  6. Step 6: Final answer
    x = 38,637.36

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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.