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Finding the Fourth Proportional to 58,460.40, 87,698.70 and 21,011.40

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Solution

The fourth proportional to 58,460.40, 87,698.70 and 21,011.40 is: 31,520.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,460.40 : 87,698.70 = 21,011.40 : x
  2. Step 2: Convert to fraction form
    58,460.40/87,698.70 = 21,011.40/x
  3. Step 3: Cross multiply
    58,460.40x = 87,698.70 × 21,011.40
  4. Step 4: Simplify right side
    58,460.40x = 1,842,672,465.18
  5. Step 5: Solve for x
    x = 1,842,672,465.18/58,460.40
  6. Step 6: Final answer
    x = 31,520.01

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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.