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Finding the Fourth Proportional to 70,334,935.40, 105,502,403.10 and 21,812,695.40

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Solution

The fourth proportional to 70,334,935.40, 105,502,403.10 and 21,812,695.40 is: 32,719,043.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,334,935.40 : 105,502,403.10 = 21,812,695.40 : x
  2. Step 2: Convert to fraction form
    70,334,935.40/105,502,403.10 = 21,812,695.40/x
  3. Step 3: Cross multiply
    70,334,935.40x = 105,502,403.10 × 21,812,695.40
  4. Step 4: Simplify right side
    70,334,935.40x = 2,301,291,782,788,315.50
  5. Step 5: Solve for x
    x = 2,301,291,782,788,315.50/70,334,935.40
  6. Step 6: Final answer
    x = 32,719,043.10

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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.