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Finding the Fourth Proportional to 86,903.36, 130,417.20 and 37,018.40

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Solution

The fourth proportional to 86,903.36, 130,417.20 and 37,018.40 is: 55,554.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,903.36 : 130,417.20 = 37,018.40 : x
  2. Step 2: Convert to fraction form
    86,903.36/130,417.20 = 37,018.40/x
  3. Step 3: Cross multiply
    86,903.36x = 130,417.20 × 37,018.40
  4. Step 4: Simplify right side
    86,903.36x = 4,827,836,076.48
  5. Step 5: Solve for x
    x = 4,827,836,076.48/86,903.36
  6. Step 6: Final answer
    x = 55,554.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.