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Finding the Fourth Proportional to 99,648,328.60, 149,472,492.90 and 56,601,607.60

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Solution

The fourth proportional to 99,648,328.60, 149,472,492.90 and 56,601,607.60 is: 84,902,411.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,648,328.60 : 149,472,492.90 = 56,601,607.60 : x
  2. Step 2: Convert to fraction form
    99,648,328.60/149,472,492.90 = 56,601,607.60/x
  3. Step 3: Cross multiply
    99,648,328.60x = 149,472,492.90 × 56,601,607.60
  4. Step 4: Simplify right side
    99,648,328.60x = 8,460,383,390,119,587
  5. Step 5: Solve for x
    x = 8,460,383,390,119,587/99,648,328.60
  6. Step 6: Final answer
    x = 84,902,411.40

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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.