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Finding the Fourth Proportional to 70,802.85, 97,708.91 and 38,973.09

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Solution

The fourth proportional to 70,802.85, 97,708.91 and 38,973.09 is: 53,783.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,802.85 : 97,708.91 = 38,973.09 : x
  2. Step 2: Convert to fraction form
    70,802.85/97,708.91 = 38,973.09/x
  3. Step 3: Cross multiply
    70,802.85x = 97,708.91 × 38,973.09
  4. Step 4: Simplify right side
    70,802.85x = 3,808,017,948.37
  5. Step 5: Solve for x
    x = 3,808,017,948.37/70,802.85
  6. Step 6: Final answer
    x = 53,783.40

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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.